San Juan Islands roofing
Flat & Low-Slope Roofing in the San Juan Islands
Torch-down & single-ply for additions, decks, and modern homes.
Flat and low-slope roofs — over additions, garages, decks, and modern island architecture — need a fundamentally different system than a pitched roof. Get it wrong and water pools and finds every seam.
We install torch-down (modified bitumen) and heat-welded TPO/PVC single-ply membranes, detail the drainage so water actually leaves the roof, and flash every penetration and wall transition properly. These are the systems that survive standing water and our relentless winter rain.
The island difference
Low-slope roofs punish sloppy seams in our wet winters. We weld and detail them to shed water, not trap it.
What’s included
- Torch-down (modified bitumen) & TPO/PVC single-ply
- Proper slope-to-drain detailing
- Fully welded/adhered seams — no water paths
- Wall-transition & penetration flashing done right
- Great fit for decks and modern low-slope designs
Typical island range
$8,000–$26,000
Flat / low-slope section using torch-down (mod-bit) or TPO/PVC single-ply. Price scales with square footage and access.
General estimate for a typical island home — not a quote. Inspections & written estimates are free.
Where we do it
Flat & Low-Slope Roofing across San Juan, Orcas, Lopez & Shaw Islands — plus the outer islands of San Juan County.